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Experimental Study on Backfilling Mine Goafs with Chemical Waste Phosphogypsum
Joint Authors
Dong, Longjun
Li, Xibing
Li, Diyuan
Cao, Zhiwei
Liu, Bing
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-01-16
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
To explore the feasibility of cemented paste backfill with phosphogypsum (PG), bleeding water and rheological tests (slump and on-site pipeline loop tests) were performed with PG backfill slurry (PGBS).
In the bleeding water test, the PGBS concentration with minimal bleeding water was measured between 60.87 and 67.61%; in the rheological slump test, values of 61 to 68% were determined for the on-site pipeline loop test.
The rheological pipeline loop test demonstrated that the resistance coefficient is lowest when the concentration is no higher than 65%.
Through industrial experiments, PG slurry with a concentration of 64%–65% backfill was successfully applied to the goaf.
The experimental results demonstrate that PGBS with characteristics of “less bleeding water” and “improved pumpability” is obtained when its concentration is between 61 and 65%.
Paste-like PG slurry was proven to be optimal for cemented PG backfilling technology.
American Psychological Association (APA)
Cao, Zhiwei& Liu, Bing& Li, Xibing& Li, Diyuan& Dong, Longjun. 2019. Experimental Study on Backfilling Mine Goafs with Chemical Waste Phosphogypsum. Geofluids،Vol. 2019, no. 2019, pp.1-12.
https://search.emarefa.net/detail/BIM-1154596
Modern Language Association (MLA)
Cao, Zhiwei…[et al.]. Experimental Study on Backfilling Mine Goafs with Chemical Waste Phosphogypsum. Geofluids No. 2019 (2019), pp.1-12.
https://search.emarefa.net/detail/BIM-1154596
American Medical Association (AMA)
Cao, Zhiwei& Liu, Bing& Li, Xibing& Li, Diyuan& Dong, Longjun. Experimental Study on Backfilling Mine Goafs with Chemical Waste Phosphogypsum. Geofluids. 2019. Vol. 2019, no. 2019, pp.1-12.
https://search.emarefa.net/detail/BIM-1154596
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1154596